Zte R621J User Manual page 11

with great force and cause serious injury to occupants of the vehicle.
 Please turn off your mobile phone at a refueling point, and the same
to the place where the use of two-way radio is prohibited.
Aircraft Safety
 Please turn off your mobile phone before the airplane takes off. In
order to protect airplane's communication system from interference,
it is forbidden to use mobile phone in flight. Safety regulations require
you to have permission from a crew member to use your phone while
the plane is on the ground.
 If the mobile phone has the function of automatic timing power -on,
please check your alarm setting to make sure that your phone will not
be automatically turned on during flight.
Battery Use
 Do not short-circuit the battery, as this can cause the unit to overheat
or ignite.
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